1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0d95cd367af4ca1806032a6d39b9bef08e4c11165953617b53c80004d7f5cc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f4bc47a-d7f3-433f-ad5b-5e0dec358473.json and https://artists.proofprofile.net/proofs/artist/9f4bc47a-d7f3-433f-ad5b-5e0dec358473.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7623744bcb78e6129aebafd886f8b483f37fc2fd58e684534120d8279fbb2e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN81987067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc298cadcb56f1009c08dcdaa58f8d290a4b8141079cbaa94b77feaa47fe754. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8b39cc53215fff0b42ff827abd8214c55c8de6a2cc74725e745f18696426c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e4c75fc2546a20f75d5b7d1e72e89696ca4100e17e1003057f721832c6871a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00599a0b22b66d55f3addd8bb5c8e5569144f27beb6ee173fc8b8f2d9da12337. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb47592b338cb22a706afb37c9f52db86e47d30d6ed26f43de438ce89588a48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8628f0b2acd75d23bcb102cb445d240a0e8d944bf446a149a393679816de82d9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c4e8de731b01fa3bedfe5f1501ead2066feb27858c4958a8bff322e87129dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d308d420e95099348592b5f3f4bf71b60db2d3798793a5cf4db92f39d6643c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd220e4c1b426a6997e45d5b0da05bb4db9c23bb9626d417611e0b31750a35761. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21308a0ffdef0f7950e298569e85dca4cfa2f4118a4df0e138f8b95d18ba46ab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bafeb238baade2049892f8efb8395a0872660129b1b155b42c0247de9c5f14. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3ae2343872827ee90cbff62140da4550fade51d0d6ede192116b7fdd0b2d24. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926114.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aade842b9883beccdf2a56359dd9348130751153113dde4e32ffaf52fff2b20. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941518a741d00e6379484d82dd2ac0b503c3734eb6014b84252f7c57bc67f0aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN91926116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c72a283071708adbe1b50ba669bceb852f2fc860bf831ca8ff80c8b2ca8f69. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCGSB2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47727acdb65b6f2cfb9e515bb561add7c1c84675a4bff322cebaafaf5fa2e852. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCGSB2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb97922598e0a81e6a4d3512fb53cf1fbee0a8428d63505806748eca9327a25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCGSB2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f5c36252068a139bdba0e7f105905a08fd1ad23fcfb562519074d7258a6370. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCGSB2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f17a1faf7ad9b232d0b00f2ec25d1ff48d9f6d6b2a545416ac0371b13f98ecb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCGSB2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d345a37f2652d5406c88f0b3b5098d1593b075764e4663abdace15677a559b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCGSB2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac894ac136a91fb11cc28367686beb32acb23d614281156baf3207f0edc4e6de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52129447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5ba70e4444f5534dff5498dc2a93de9dc9fbaaea315de1988dfca1e567b8fc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2408859.